Methylation of Ylidene-Triazenes: Insight and Guidance for 1,3-Dipolar Cycloaddition Reactions
作者:Andrew G. Tennyson、Eric J. Moorhead、Brian L. Madison、Joyce A. V. Er、Vincent M. Lynch、Christopher W. Bielawski
DOI:10.1002/ejoc.201000939
日期:2010.11
Coulombic effects (i.e., the acquisition of positive charge) as opposed to electronic effects from the electron-donating or withdrawing groups of the arylazide. Whereas computational analyses revealed that the observed regioselectivity of the methylation reaction may be explained by thermodynamics, kinetic factors (e.g., sterics) may also be important contributors and render one reaction pathway significantly